import copy

ll = [9,10]
l1 = [1,2,3,4,5,ll]
l2 = copy.deepcopy(l1)

print(l1, id(l1))
print(l2,id(l2))

l1[-1][-1] = 111

# 修改原对象中的列表，不会影响深拷贝后的列表
print(l1, id(l1))
print(l2,id(l2))
